You are nearing your due date and your body is sending signals. What exactly are contractions, and how do you know when they are the real thing?
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Contractions are the uterus's muscle tightenings that open the cervix during labor. They start as mild cramps and develop into intense, regular tightenings. Understanding the different types of contractions, and knowing when to contact the hospital, gives you confidence as labor approaches.
What Are Contractions?
Contractions are rhythmic tightenings of the uterine muscle. During each contraction, the muscle fibers squeeze together and the cervix gradually shortens and opens. This process is called effacement and dilation.
According to the WHO, most births begin spontaneously between weeks 37 and 42. Contractions are the body's natural mechanism for delivering the baby.
What Contractions Feel Like
Most people describe contractions as:
- Tightening of the abdomen, the entire uterus contracts and becomes hard
- Cramping in the lower abdomen, similar to intense menstrual cramps
- Pain in the lower back, especially with back labor
- Downward pressure, toward the pelvis and rectum
- A wave-like sensation, pain builds up, peaks, and then subsides
Contractions come and go. Between contractions, the uterus relaxes and you can breathe out and rest.
Midwives and obstetricians use electronic fetal monitoring (CTG, cardiotocography) to monitor both contractions and the baby's heart rate during active labor. This monitoring is standard in most hospital labor and delivery units.
Real Contractions vs. Braxton Hicks. How to Tell the Difference
One of the most common questions toward the end of pregnancy is: "Are these real contractions or just Braxton Hicks?" Here is an overview to help you tell them apart.
Braxton Hicks Contractions (Practice Contractions)
Braxton Hicks are the body's preparation for labor. They are common from week 20 onward:
- Irregular, without a set pattern
- Stop with rest, disappear if you lie down or take a warm bath
- Do not get stronger over time
- Felt in the front, mostly in the front of the abdomen
- Painless or mild, more discomfort than pain
- Do not affect the cervix, they do not cause dilation
Real Contractions
Real contractions have a clearly different pattern:
- Regular, come at even intervals that gradually shorten
- Do not stop with rest, continue no matter what you do
- Get stronger with each contraction
- Radiate from back to front, often wrapping around the entire abdomen
- Last longer and longer, from 30 seconds to over 1 minute
- Open the cervix, cause dilation
Quick Check: Are These Real Contractions?
Try this test at home:
- Lie down and rest for 30 minutes
- Drink water, dehydration can trigger Braxton Hicks
- Time the contractions with a contraction timer
- If contractions continue, get stronger, and come more frequently = likely real
- If they ease off, become irregular, or stop = likely Braxton Hicks
Use Babysential's contraction timer to track your contractions. It automatically calculates duration, interval, and pattern so you can give accurate information to your midwife or doctor when you call.
Other Signs That Labor Is Approaching
Contractions are the main sign, but your body sends several signals in the days and weeks before labor:
Days to Weeks Before
- The baby drops, the baby settles lower into the pelvis (lightening)
- Increased pressure on the bladder, you need to urinate even more frequently
- Less heartburn, because the baby is no longer pressing up against the stomach
- Back pain, the weight on the pelvis causes an aching back
- Looser joints, the hormone relaxin makes joints more flexible
Hours to Days Before
- Mucus plug passes, a gelatinous clump, sometimes with a little blood (bloody show)
- Water breaks, the membranes rupture and amniotic fluid flows (clear or lightly pink-tinged)
- Diarrhea, the body "clears out" before labor
- Nesting instinct, sudden burst of energy and an urge to clean and organize
According to the AAP and WHO, you should always call your maternity unit if your water breaks, whether or not you have contractions. The color of the amniotic fluid is important information, it should normally be clear or lightly pink.
Contractions Through Labor: Phase by Phase
Labor is divided into three stages. Contractions change character throughout the entire process.
Opening Phase: Latent Phase (0–4 cm)
The longest phase can last from hours to over a day:
| Feature | Typical |
|---|---|
| Duration per contraction | 30–45 seconds |
| Interval | 5–20 minutes |
| Intensity | Mild to moderate |
| What to do | Rest at home, eat lightly, move around |
In this phase you can generally stay at home. Save your energy, rest when you can, and eat and drink regularly.
Opening Phase: Active Phase (4–10 cm)
Now contractions increase in strength and frequency:
| Feature | Typical |
|---|---|
| Duration per contraction | 45–60 seconds |
| Interval | 3–5 minutes |
| Intensity | Strong |
| What to do | Head to the hospital, breathing exercises, movement |
Pushing Phase
The cervix is fully dilated (10 cm) and the body has a strong urge to push:
| Feature | Typical |
|---|---|
| Duration per contraction | 60–90 seconds |
| Interval | 2–3 minutes |
| Intensity | Very strong with urge to push |
| What to do | Push with contractions, listen to your midwife |
Delivery of the Placenta
After the baby is born, a few mild contractions loosen the placenta. They feel like weak cramps and usually last 5–30 minutes.
When Should You Go to the Hospital?
The 5-1-1 Rule
The most widely used rule of thumb for first-time parents is:
- Contractions come every 5 minutes
- Each contraction lasts at least 1 minute
- The pattern has held for at least 1 hour
For those who have given birth before, it is safe to go in a little earlier, as labor often progresses more quickly.
Call the Hospital Immediately If
- Your water breaks, regardless of whether you have contractions
- Bleeding, more than a little bloody show
- Amniotic fluid is green or brown, may indicate meconium
- You feel reduced movement from the baby
- You have severe, continuous pain without a break between contractions
Read our detailed guide on the 5-1-1 rule and when to go to the hospital.
Prepare a birth plan well in advance. Have your hospital bag packed and your route planned from week 36. Use Babysential's hospital bag checklist to stay organized.
Pain Relief During Contractions
There are many ways to manage the pain, and most people use a combination.
Non-Medicated Methods
- Movement, walk, sway, sit on a birthing ball
- Heat, heating pad on the back or a warm bath
- Breathing exercises, slow, deep breaths through contractions
- Massage, your partner can massage the lower back
- Water, many find great relief in a bathtub or shower
- TENS machine, transcutaneous electrical nerve stimulation
Medicated Methods
Hospital maternity units typically offer:
- Nitrous oxide (laughing gas), inhaled during contractions
- Epidural, pain relief injected into the spine, very effective
- Pudendal block, local anesthesia during the pushing phase
- Opioid pain relievers, injections used in some cases
Talk to your midwife or doctor about your preferences. A birth plan can help you communicate your wishes. Read our guides on natural pain relief during labor and epidurals during labor.
Babysential's Contraction Timer. Your Tool
Babysential's contraction timer helps you stay on top of things when contractions start:
- One-button operation, start and stop with a single tap
- Automatic calculation of duration and interval
- Visual graph showing the pattern over time
- Pain scale to log intensity
- Export function, share the information with your midwife or doctor
Start the timer when you suspect contractions have begun. It helps you assess whether it is time to call the hospital.
Frequently Asked Questions
How Long Does Labor Last?
Labor from start to finish typically lasts 8–15 hours for first-time parents and 4–8 hours for those who have given birth before, according to the AAP. The latent phase takes up most of the time, while the active phase is often shorter.
Can Contractions Start and Stop?
Yes, this is common, especially in the latent phase. Contractions can start in the evening, ease off overnight, and pick back up the next day. The body works at its own pace. Use the pauses to rest and gather strength.
What Is Back Labor?
Back labor occurs when the baby is positioned with the back of their head against the mother's spine (occiput posterior). The pain is felt mostly in the lower back and eases little between contractions. Movement, getting on all fours, and applying heat to the back can help.
Is It Dangerous to Wait Too Long at Home?
For most people, it is safe to stay at home during the latent phase. But always call your maternity unit if you are unsure, and go in immediately if your water breaks, if there is bleeding, if the amniotic fluid is green, or if you feel reduced fetal movement. Use the contraction timer to keep accurate records.
What Happens If Contractions Don't Start on Their Own?
If you are past your due date (42 weeks) without contractions starting, the hospital will typically induce labor. This is done with medications that trigger contractions. Read more about labor induction.
Sources and References
- WHO, Intrapartum care for a positive childbirth experience
- AAP, Labor and Delivery
- ACOG, How to Tell When Labor Begins
Helpful tools
- Due Date Calculator. Calculate your estimated due date
- Contraction Timer. Track your contractions during labor
- All Baby Tools. Browse all free tools for pregnancy and baby care
Related articles
- Braxton Hicks or Real Contractions - How to Tell the Difference. Wondering if it's Braxton Hicks or real contractions? Learn the difference between practice contractions and labor contractions, and when to contact the hospital.
- Early Labor Contractions: Signs That Birth Is Near. What are early labor contractions? Learn to recognize the first signs that labor is starting, what to do at home, and when to call the hospital.
- Breathing Techniques During Labor: A Complete Guide. Learn 4 effective breathing techniques for labor. Pain relief through breathing exercises during contractions, from early labor to the transition phase.
